The Keep Military Museum is a museum about the Devonshire and Dorset military regiments, West of Dorchester town centre in Dorset.

The museum has three floors of exhibits with artefacts, weapons, uniforms, medals, photographs, maps, computer displays, informational displays and personal stories. There is information about the origins of current regiments in Dorset and Devonshire and the military actions they were involved in such as the World War I Gallipoli campaign and the World War II Battle of the Somme.